Hi there,
Thank you for your response, here are more details about my lucky bamboo. I grow it in a bowl of water. I only use distilled water for them (actually there are three of them, only one of them has big leaves and turning yellow on the edge of some leaves). There is no insect nor any other pests with them, and they have enough light (no direct light, but in a bright corner of our house).
if I cut the yellow leaves, does it hurt the plant? They are the top leaves (lower leaves seem healthy).
Lucky bamboo ( Dracaena sanderiana) is sensitive to the salts and chemicals in tap water so using distilled water or rainwater is the correct thing to do. When growing your bamboo in water, make sure that the roots stay submerged at all times and be sure to change the water every couple of weeks to prevent it from going stagnant.
This plant does not require a lot of fertilizer and can survive in pure water for quite a while. The fact that you do not see any insects or pests and you are using only distilled water and the new growth is yellow indicates to me that it is time to give your plant some fertilizer. You can fertilize the plant every 2 months during the active growing period (March-August) with a (1:10) dilution of the normal dilution a 10-10-10 fertilizer.
As mentioned in our previous post ” If any leaves are very yellow, brown, or tattered, feel free to remove them. They cannot be restored.”
The following links additional information of the proper care of this houseplant:
https://www.proflowers.com/blog/lucky-bamboo-care
https://www.ourhouseplants.com/plants/lucky-bamboo-dracaena-sanderiana
https://www.thespruce.com/growing-lucky-bamboo-1902994